Last week Russian air strikes targeted eastern Ghouta, giving back-up to Syrian government forces who launched a ground attack in Jobar.

Jim Walsh, a research associate at the Security Studies Programme of the Massachusetts Institute of Technology told Al Jazeera it is a propaganda video, and a highly irresponsible portrayal of war.

"It seems to be the most likely audience is young males who would see this game and say I want to join the Russian army.

"If you're a general viewer you would see it as 'wow Russia is powerful'. It is both horrific and entrancing all at the same time," Walsh said.

Russia air strike toll rises

Russia began its air strikes in Syria on September 30 and says it has hit some 500 "terrorist" targets since launching its campaign.

Russia says its strikes target the Islamic State of Iraq and the Levant (ISIL) group and other "terrorists", but rebels and the US, which is conducting its own campaign against ISIL and some rebel factions, say Moscow has focused more on opposition forces than ISIL.

The UK-based Syrian Observatory for Human Rights said that since the launch of Russia's air strikes in Syria, at least 370 people have been killed, including 127 civilians. The death toll also includes at least 36 children.

US and Russian military officials signed a memorandum of understanding on Monday that includes steps their pilots should take to avoid an inadvertent clash over Syria as they carry out separate air strikes against armed groups, the Pentagon said.

Earlier this month the Pentagon said US-led coalition aircraft bombing ISIL in Syria were re-routed at least once to avoid a close encounter with Russian planes.